Marine Institute Open Access Repository >
Marine Institute Community of Research Publications >
Irish Fisheries Bulletin >
Irish Fisheries Bulletin >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10793/188

Title: Gutted to round-weight conversion factors for anglerfish (Lophius poscatorius and Lophius budegassa)
Authors: Lordan, C.
Gerritsen, H.D.
Keywords: anglerfish (Lophius poscatorius and Lophius budegassa)
Issue Date: 2006
Publisher: Marine Institute
Citation: Gerritsen, H. & Lordan, C., "Gutted to round-weight conversion factors for anglerfish (Lophius poscatorius and Lophius budegassa)", Irish Fisheries Bulletin, Marine Institute 2006
Series/Report no.: Irish Fisheries Bulletin;26
Abstract: In response to a request from the Department of Communications Marine and Natural Resources and fishing industry, the conversion factors used to estimate round or live weights from gutted anglerfish were re-examined. A number of data sources was available from survey data, port sampling and observer trips. In some cases, the liver is left in place when the fish are gutted. For these landings a separate conversion factor is necessary. The conversion factors were found to be independent of fish size, however, some significant differences between the data sources were found. Significant differences between the conversion factors of the two species of anglerfish (Lophius piscatorius and L. budegassa) were also found. As commercial landings of anglerfish are not usually speciated, a generic conversion factor was estimated for Lophius spp. by combining the data for both species after weighting by the estimated proportions of the two species in the Irish landings. The resultant conversion factor for fully gutted fish is 1.23 and 1.17 when the liver is left in place; both estimates are lower than the current Irish factor of 1.28.
URI: http://hdl.handle.net/10793/188
ISSN: 1649-5055
Appears in Collections:Irish Fisheries Bulletin

Files in This Item:

File Description SizeFormat
No26 Irish Fisheries Bulletin.pdf191.75 kBAdobe PDFView/Open
Use License

Items in the Marine Institute Open Access Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! Marine Institute Copyright © 2011  - Feedback